PT6520 PTC | Alldatasheet

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Technical content

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 1 - February, 2006 LCD Driver IC PT6520

DESCRIPTION

PT6520 is a dot matrix LCD driver IC. The bit addressable display data which is sent from a microcomputer is stored in a build-in display data RAM and generates the LCD signal. The PT6520 incorporates innovative circuit design strategies to assure very low current dissipation and a wide range of operating voltages. The PT6520 permits the user to implement high-performance handy systems operating from a miniature battery.

FEATURES

  • CMOS Technology
  • 8-bit data interface
  • 61 Segment output
  • 16 Common output
  • Duty cycle – PT6520 – 1/16 ~ 1/32
  • 2560 bits built-in display data RAM
  • Master/Slave operation
  • Low power: 30µW
  • LCD voltage: 3.5 ~ 13V
  • Power supply: 2.4 ~ 7V
  • Available in 100 pins, QFP

APPLICATIONS

  • Peripheral Devices
  • LCD Modules
  • Electronic Instruments

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 2 - February, 2006 LCD Driver IC PT6520 SYSTEM BLOCK DIAGRAM PT6520 M/S PT6520 M/S SEG0~SEG60 SEG0~SEG60 FR CK GND VDD COM0~COM1 5 COM16~COM31

20 CHAR x 4 LINES

CPU (68xx, 80xx) Data Control

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 3 - February, 2006 LCD Driver IC PT6520 BLOCK DIAGRAM Display TIming Generator Line Counter Display Start Line Register OSC2 FR Status Command Decoder Column Address Counter Column Address Register Column Address Decoder Display Data Ram 2560 bits Line Address Decoder I/O Buffer Internal Bus Bus Hol der MPU Interface Display data Latch Circuit LCD Dri ver Circuit Common Counter D0 - D7 E, R/W (RD)(WR) RES V2, V1, V5 CM0 - CM15 SG0 - SG60 VDD VSS Low Address Register

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 4 - February, 2006 LCD Driver IC PT6520 PIN CONFIGURATION 1COM5 COM6 COM7 COM8 COM9 COM10 COM11 COM12 COM13 COM14 COM15 SEG60 SEG59 SEG58 SEG57 SEG56 SEG55 SEG54 SEG53 SEG52 SEG51 SEG50 SEG49 SEG48 SEG47 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 SEG0 AO OSC1 OSC2 1010 100 46 85 47 84 48 83 49 82 COM4 COM3 COM2 COM1 COM0 SEG41 SEG40 SEG39 M/S SEG38 SEG37 SEG36 SEG35 FR SEG34 RES SEG33 VDD SEG32 DB7 SEG31 SEG26 DB6 SEG30 SEG25 DB5 SEG29 SEG24 DB4 SEG28 SEG23 DB3 SEG27 SEG22 DB2 SEG46 SEG45 SEG44 SEG43 SEG42 E(RD) R/W (WR) VSS DB0 DB1 PT6520

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 5 - February, 2006 LCD Driver IC PT6520 INPUT/OUPUT CONFIGURATIONS The schematic diagrams of the input and output circuits of the logic section are shown below: INPUT PIN: A0, E, R/W, DB0~DB7, M/S VDD VSS INPUT/OUTPUT PIN: FR VSS VDD

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 6 - February, 2006 LCD Driver IC PT6520 OUTPUT PIN: COM0 TO COM5 VDD OUTPUT PIN: SG0~SG60 VDD

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 7 - February, 2006 LCD Driver IC PT6520 PIN DESCRIPTION Pin Name Function DB0 ~ DB7 Data input A0 Selection display data or instructions. High: Display data. Low: Instruction. RES Reset the system and selects the interface type for a 68 port/80 port MPU. High: 68 port MPU interface. Low: 80 port MPU interface. (edge trigger) OSC1 Oscillation input pin E/RD Read/Write Enable signal when a 68 port MPU is connected. (Active-Low read enable signal when an 80 port MPU is connected) RW/WR Read/Write select signal when a 68 port MPU is connected. High: read select. Low: write select. (Active-Low write enable input when an 80 port MPU is connected. Rising edge sensing) OSC2 Oscillation output pin FR LCD Frame (AC-conver sion) signal input/output SEG0 ~ SEG60 Segment output for driving the LCD COM0 ~ COM15 Common output for driving the LCD COM31 ~COM16 Common output for driving the LCD M/S Master/Slave select signal VDD 5V power supply VSS 0V power supply (GND level) V1, V2, V3, V4, V5 Power supplies for driving the LCD, VDD>V1>V2>V3>V4>V5 Note: 1. This is an example of PT6520 family pin assignment. The modified pin names are given below. Pin/Pad Number Product Name 74 75 96 ~ 100, 1~ 11 93 94 95 PT6520 OSC1 OSC2 COM0 ~ COM15 M/S V4 V1

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 8 - February, 2006 LCD Driver IC PT6520 FUNCTION DESCRIPTION DISPLAY COMMANDS (Based on the 80 port MPU; the RD and WR commands differ for the 68 port MPU) Command RD WR A0 D7 D6 D5 D4 D3 D2 D1 D0 Function

1 Display

ON/OFF 1 0 0 1 0 1 0 1 1 1 0/1 Switches the entire display ON or OFF, regardless of the Display RAM’s data or the internal status. *

2 Display

START Line 1 0 0 1 1 0 Display START address (0-31) Determines the line of RAM data to be displayed at the display’s top line (COM0)

3 Page Address

Set 1 0 0 1 0 1 1 1 0 Page (0-3) Sets the page of the Display RAM in the page address register. Column (segment) Address Set 1 0 0 0 Column address (0-79) Sets the column address of the Display RAM in the column address register.

5 Status Read 0 1 0

Read the status. Busy 1: Busy (internal processing) 0: Ready status ADC 1: Rightward (forward) output 0: Leftward (reverse) output ON/OFF 1: Display OFF 0: Display ON RESET 1: Resetting. 0: Normal

6 Write Display

7 Read Display

bus. These commands access a previously-specified address of the Display RAM, after which the column address is incremented by one.

8 ADC Select 1 0 0 1 0 1 0 0 0 0 0/1

correspondence between the Display RAM’s column address and segment driver output ports 0: Rightward (forward)output 1: Leftward (reverse) output

9 Static Drive

ON/OFF 1 0 0 1 0 1 0 0 1 0 0/1 Selects normal display operation or static all-lit drive display operation. 1: Static drive (power save)* 0: Normal display operation

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 9 - February, 2006 LCD Driver IC PT6520 Command RD WR A0 D7 D6 D5 D4 D3 D2 D1 D0 Function

10 Duty Select 1 0 0 1 0 1 0 1 0 0 0/1

Selects the duty factor for driving LCD cells. 1: 1/32 duty, 0: 1/16 duty

11 Read Modify

Write 1 0 0 1 1 1 0 0 0 0 0 Increments column address counter by 1 when display is written. (This is not done when data is read)

12 End 1 0 0 1 1 1 0 1 1 1 0 Cancels the Ready Modify Write

mode.

13 Reset 1 0 0 1 1 1 0 0 0 1 0

Resets the display START line to the 1st line in the register. Resets the column address counter to 0 and page address to 0.

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 10 - February, 2006 LCD Driver IC PT6520 RECOMMENDED SOFTWARE FLOWCHART DELAY TIME>1ms SET COMMAND 1 ("Display Off " Status) CLEAR DISPLAY RAM (See Note 2) SET COMMAND 1 ("Display On" Status) MAIN PROGRAM END INITIAL SETTING MAIN LOOP START Notes: 1. Command 1: Display On/Off Commands 2. When IC power is applied for the first time, the contents of the Display RAM are not defined; thus, it is strongly suggested that the contents of the Display RAM must be cleared during the initial setting.

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 11 - February, 2006 LCD Driver IC PT6520 CURSOR BLINKING SEQUENCE Page Address Set Column Address Set Read Modify Write Dummy Read Data Read Data Write Modify Ended End NO

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 12 - February, 2006 LCD Driver IC PT6520 END TIMING N N+1 N+2 N+m N Return EndRead Modify Wri te Mode Set Column Address MPU INTERFACE (1)80-FAMILY MPU PT6520 VCC A0 D- D07 RD WR RES GND /Reset VDD VCCA0 D- D07 RD WR RES VSS VS MPU (2)68-FAMILY MPU MPU PT6520 VCC A0 D- D07 E R/W RES GND /Reset VDD VCCA0 D- D07 E R/W RES VSS VS

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 13 - February, 2006 LCD Driver IC PT6520 TYPICAL CONNECTIONS WITH LCD PANEL (FULL DOT LCD PANEL: 1 CHARACTER = 6 X 8 DOTS) (1) DUTY 1/16, 10 CHARACTER X 2 LINES 16 1 61 LCD

16 X 61

(2) DUTY 1/32, 20 CHARACTERS X 4 LINES

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 14 - February, 2006 LCD Driver IC PT6520 LCD DRIVER INTERCONNECTIONS PT6520 – PT6520 M/S OSC1 OSC2 FR To LCD COM VDD To LCD SEG PT6520 Master M/S OSC1 OSC2 FR To LCD COM VSS PT6520 Slave Rf To LCD SEG

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 15 - February, 2006 LCD Driver IC PT6520 RELATIONSHIP BETWEEN DISPLAY DATA RAM LOCATIONS AND ADDRESSES (Display Start Lin: 08) DATAPage Address Line address SEG Pin Column Adress ADC D0=I D0=O SEG 04FH00H SEG 1 SEG 2 SEG 3 SEG 4 SEG 5 SEG 6 SEG 7 SEG60 Page 0 Page 1 Page 2 Page 3 00H Associated Line (ex.) COM 0 COM 1 COM 2 COM 3 COM 4 COM 5 COM 6 COM 7 COM 8 COM 9 COM10 COM11 COM12 COM13 COM14 COM15 COM16 COM17 COM18 COM19 COM20 COM21 COM22 COM23 COM24 COM25 COM26 COM27 COM28 COM29 COM30 COM31 Common output Assignment Start Display Area (In this example, the display star tline is set at address 08) D1 , D2=0 , 0 0 , 1 1 , 0 1 , 1 SEG59 SEG58

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 16 - February, 2006 LCD Driver IC PT6520 TIMING CHART READ/WRITE TIMING FOR THE 80-PORT MPU tAH8 tCYC8 tCC tDS8 tDH8 tOH8tACC8 tAW 8 WR, RD D0~D7 (WRITE) D0~D7 (READ) READ/WRITE TIMING FOR THE 68-PORT MPU R/W D0~D7 (WRITE) D0~D7 (READ) tAW 6 tCYC6 tEW tAH6 tAD6tDS6 tACC6 tOH6 E

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 17 - February, 2006 LCD Driver IC PT6520 (3) RESET TIMING FOR 80-PORT/68-PORT DISPLAY tR RES SEG (80-Port) (68-Port)

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 18 - February, 2006 LCD Driver IC PT6520 ABSOLUTE MAXIMUM RATING (Unless otherwise stated, Ta=25℃, VDD=0V) Parameter Symbol Rating Unit Supply voltage (1) VSS -8.0 to 0.3 V Supply voltage (2) V5 -16.5 to 0.3 V Supply voltage (3) V1, V2, V3, V4 V5 to 0.3 V Input voltage VI VSS –0.3 to 0.3 V Output voltage VO VSS –0.3 to 0.3 V Power dissipation PD 250 mW Operating temperature Topr -40 to 85 ℃ Storage temperature Tstg -65 to 150 ℃ Soldering temperature Tsol 260°C for 10 s (at leads) -

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 19 - February, 2006 LCD Driver IC PT6520 DC CHARACTERISTICS (Unless otherwise stated, VDD=0V, VSS=-5/-3V, Ta=25℃) Parameter Symbol Condition Min Typ Max Unit Applicable Pin Recommended -5.5 -5.0 -4.5 V Operating voltage (1) (Note 1) Potential VSS -7.0 - -2.4 V VSS Recommended -13 - -3.5 V Potential V5 -13 - - V V5 Potential V1, V2 0.6xV5 - VDD V V1, V2 Operating voltage (2) Potential V3, V4 V5 - 0.4xV5 V V3, V4 VIHT VSS=-5V VSS+2.0 - VDD VIHC VSS=-5V 0.2xVSS - VDD (Notes 2, 3) VIHT VSS=-3V 0.2xVSS - VDD High input voltage VIHC VSS=-3V 0.2xVSS - VDD (Notes 2, 3) VILT VSS=-5V VSS - VSS+0.8 VILC VSS=-5V VSS - 0.8xVSS (Notes 2, 3) VILT VSS=-3V VSS - 0.85xVSS Low input voltage VILC VSS=-3V VSS - 0.8xVSS V (Notes 2, 3) VOHT IOH=-3.0mA VSS+2.4 - - VOHC1 IOH=-2.0mA VSS+2.4 - - VOHC2 VSS=-5V IOH=-120µA 0.2xVSS - - V OSC2 (Notes 4, 5) VOHT IOH=-2mA 0.2xVSS VOHC1 IOH=-2mA 0.2xVSS High output voltage VOHC2 VSS=-3V IOH=-50µA 0.2xVSS V OSC2 (Notes 4, 5) VOLT IOL=3.0mA - - VSS+0.4 VOLT1 IOL=2.0mA - - VSS+0.4 VOLT2 VSS=-5V IOL=120µA - - 0.8xVSS V OSC2 (Notes 4, 5) VOLT IOL=2mA 0.8xVSS VOLC1 IOL=2mA 0.8xVSS Low output voltage VOLC2 VSS=-3V IOL=50µA 0.8xVSS V OSC2 (Notes 4, 5) Input leak current ILI -1 - 1 µA (Note 6) Output leak current ILO -3 - 3 µA (Note 7) V5=-5.0V VSS=-5V - 5 7.5 LCD driver ON resistance RON Ta=25°C V5=-3.5V VSS=-5V - 10 50 KΩ SEG0~60 COM0~15 (Note 9) Static current consumption I DDQ CS=CL=VDD - 0.05 1 µA VDD fCL=2KHz - 2.0 5.0 During display V5=-5.0V VSS=-5V Rf=1MΩ - 9.5 15 µA fCL=2KHz - 1.5 4.5 During IDD (1) During display V5=-5V VSS =-3V Rf=1MΩ - 6.0 12 µA VDD (Notes 10, 11) During access Tcyc=200kHz, VS5=-5V - 300 500 Dynamic current dissipation IDD (2) VSS=-3V, During access Tcyc=200KHz, VSS=-3V 150 300 µA VDD (Note 8) Input terminal capacity CIN Ta=25°C, f=1MHz - 5.0 8 pF All input terminals

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 20 - February, 2006 LCD Driver IC PT6520 Parameter Symbol Condition Min Typ Max Unit Applicable Pin Rf=1MΩ ±5% VSS=-5.0V 12 17 21 Oscillation frequency Fosc Rf=1MΩ ±5% VSS=-3.0V 11 16 21 KHz OSC2 (Notes 5, 6) Hysteresis VH 0.05VSS 0.1VSS - V (Notes 2, 3, 4, 5) Notes: 1. A wide range of operating voltages is guaranteed, except in case of abrupt voltage fluctuations during MPU access. 2. A0, D0~D7, E, R/W pins 3. CL, FR, M/S and RES pins 4. D0~D7 5. FR 6. A0, E (or RD), R/W (or WR), M/S and RES. 7. When D0 to D7 and FR are high impedance. 8. During continual writer access at a frequency of tcyc. Current consumption during access is effectively proportional to the access frequency. 9. For a voltage differential of 0.1V between input (V1, …, V4) and output (COM, SEG) pins. All voltages within specified operating voltage range. 10. PT6520 only. Does not include transient currents due to stray and panel capacitances.

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 21 - February, 2006 LCD Driver IC PT6520 AC CHARACTERISTICS READ/WRITE TIMING FOR THE 80-PORT MPU (Ta=25℃, VDD=0V, VSS=-5V) Parameter Signal Symbol Condition Min. Typ. Max Unit VSS=-5V 10 - - ns Address hold time tAHB VSS=-3V 20 - - ns VSS=-5V 20 - - ns Address set-up time A0, CS tAWB VSS=-3V 40 - - ns VSS=-5V 1000 - - ns System cycle time tCYC8 VSS=-3V 2000 - - ns VSS=-5V 200 - - ns Control pulse width WR, RD tCC VSS=-3V 400 - - ns VSS=-5V 80 - - ns Data set-up time tDS8 VSS=-3V 160 - - ns VSS=-5V 10 - - ns Data hold time tDH8 VSS=-3V 20 - - ns VSS=-5V - - 90 ns RD access time tACC8 VSS=-3V - - 180 ns CL=100pF 10 - 60 ns Output disable time D0~D7 tOH8 CL=100pF, VSS=-3V 20 - 120 ns

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 22 - February, 2006 LCD Driver IC PT6520 READ/WRITE TIMING FOR THE 68-PORT MPU (Ta=25℃, VDD=0V, VSS=-5V) Parameter Signal Symbol Condition Min. Typ. Max Unit VSS=-5V 1000 - - ns System cycle time tCYC6 VSS=-3V 2000 - - ns VSS=-5V 20 - - ns Address set-up time tAW6 VSS=-3V 40 - - ns VSS=-5V 10 - - ns Address hold time A0, CS R/W tAH6 VSS=-3V 30 - - ns VSS=-5V 80 - - ns Control pulse width tDS6 VSS=-3V 160 - - ns VSS=-5V 10 - - ns Data set-up time tDH6 VSS=-3V 20 - - ns CL=100pF VSS=-5V 10 - 60 ns Data hold time tOH6 CL=100pF VSS=-3V 20 - 120 ns CL=100pF VSS=-5V - - 90 ns RD access time D0~D7 tACC6 CL=100pF VSS=-3V - - 180 ns VSS=-5V 100 - - ns READ VSS=-3V 200 - - ns VSS=-5V 80 - - ns Enable disable time WRITE E tew VSS=-3V 160 - - ns Note: 1. tCYC6 indicates the cycle during which CS/E are high; it does not indicate are cycle of the E signal. CONTROL TIMING FOR 80-PORT/68-PORT MPU (Ta=25℃, VDD=0V, VSS=-5V) Parameter Signal Symbol Condition Min. Typ. Max Unit VSS=-5V 1 - 750 µs Reset time RES tR VSS=-3V 1.5 - 1000 µs VSS=-5V 1 - - µs Reset time (68-Port) RES tR1 VSS=-3V 1.5 - - µs VSS=-5V 1 - - µs Reset time (80-Port) RES tR2 VSS=-3V 1.5 - - µs Note: 1. The input timing of the FR delay time is determined by the PT6520 (Slave) 2. The output timing of the FR delay time is determined by the PT6520 (Master)

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 23 - February, 2006 LCD Driver IC PT6520 PAD LAYOUT (PT6520D*A) 100 35 40 45 50 95 90 85 X Y 3.44mm 4.07mm AI PAD Chip Specification Dimension (mm) Chip size 3.44 x 4.07 Chip thickness 0.400+0.025 Pad size 0.095 x 0.095

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 24 - February, 2006 LCD Driver IC PT6520 PAD COORDINATES OF PT6520D*A (Coordinate unit: um) Pin no. Name X Y Pin no. Name X Y Pin no. Name X Y 33 SEG39 575.4 76.4 67 SEG5 3365.4 2040.2 34 SEG38 725.4 76.4 68 SEG4 3365.4 2155.2

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 25 - February, 2006 LCD Driver IC PT6520 ORDER INFORMATION Order Part Number Package Type Top Code PT6520 (L) 100 Pin, QFP PT6520 PT6520-H Dice - Notes: 1. (L), (C) or (S) = Lead Free. 2. The Lead Free mark is put in front of the date code.

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 26 - February, 2006 LCD Driver IC PT6520

PACKAGE INFORMATION

100 PINS, QFP

0.25mm GAUGE PLANE -D- D E -A- -B- -H- e b A2 A1 A c L1 0.10 C θ

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6520 V1.6 - 27 - February, 2006 LCD Driver IC PT6520 Symbol Min. Nom. Max. C 0.11 - 0.23 L 0.73 0.88 1.03 L1 - 1.60 - A - - 3.40 A1 0.25 - 0.50 A2 2.50 2.70 2.90 b 0.22 - 0.40 R1 0.13 - - R2 0.13 - 0.30 θ 0º - 7º θ  0º - - θ 2 5º - 16º θ 3 5º - 16º S 0.20 - - D 23.20 BSC. D1 20.00 BSC. D2 18.85 REF. E 17.20 BSC. E1 14.00 BSC E2 12.35 REF. e 0.65 BSC. Notes: 1. All dimensioning and tolerancing conform to ASME Y14.5M-1994 2. Dimensions “D1” and “E1” do not include mold protrusion, allowable protrusion is 0.25 mm per side, dimensions “D1” and “E1” do include mold mismatch and are determined at datum plane “H”. 3. Dimensions “D1” and “E1” do not include mold protrusion, allowable protrusion is 0.25 mm per side, dimensions “D1” and “E1” do include mold mismatch and are determined at datum plane “H”. 4. Details of Pin 1 identifier are optional but must be located within the zone indicated. 5. Regardless of the relative size of the upper and lower body sections, dimensions “D1” and “E1” are determined at the largest feature of the body exclusive of mold flash and gate burrs but including any mismatch between the upper and lower sections of the molded body. 6. All dimensions are in millimeters. 7. Dimension “b” do not include dambar protrusion. The dambar protrusion(s) shall not cause the lead width to exceed “B” maximum by more than 0.08 mm. Dambar cannot be located on the lower radius or the lead foot. 8. “A1” is defined as the distance from the seating plane to the lowest point of the package body. 9. Refer to JEDEC MS-022 Variation GC-1. JEDEC is the registered trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION.